| 摘要 |
On an antenna forming face ( 9 ) in a rectangular shape which a dielectric base ( 7 A) has, a linear element ( 11 A) is provided adjacently only peripheries ( 9 a , 9 b , 9 c, and 9 d) of the antenna forming face ( 9 ). From the linear element ( 11 A), a linear conductor ( 25 ) for matching impedance branches. Since the linear element is adjacent to only the peripheries ( 9 a , 9 b , 9 c, and 9 d) of the antenna forming face ( 9 ), portions of the linear element ( 11 A) do not become adjacent to each other. Accordingly, mutual interference which easily occurs when the portions of the linear element ( 11 A) are adjacent to each other does not occur, so that decrease of radiation efficiency of the dielectric antenna ( 1 A) and hindrance to widening a band thereof can be eliminated as much as possible.
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